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<head><meta charset="utf-8"><title>pre-meeting triage 2019-07-18 #54818 · t-compiler · Zulip Chat Archive</title></head>
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<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html">pre-meeting triage 2019-07-18 #54818</a></h3>

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<a name="171162438"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171162438" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171162438">(Jul 18 2019 at 11:58)</a>:</h4>
<p>This week the meeting will be run by yours truly. Starting the pre-triage early so that I can procrastinate from my procrastination leisurely.</p>



<a name="171163620"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171163620" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171163620">(Jul 18 2019 at 12:16)</a>:</h4>
<p><strong>Forgone caching in cycles caused much overflow in trait solving</strong> <a href="https://github.com/rust-lang/rust/issues/61960" target="_blank" title="https://github.com/rust-lang/rust/issues/61960">#61960</a> </p>
<p>Commented that I find it unlikely that anybody will work on this until the vacation spree is over. Especially since we raised the default recursion limit and it remediates this class of issues until an appropriate fix is made.</p>



<a name="171163922"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171163922" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171163922">(Jul 18 2019 at 12:20)</a>:</h4>
<p><strong>regression: rustdoc resolution changes</strong> <a href="https://github.com/rust-lang/rust/issues/61560" target="_blank" title="https://github.com/rust-lang/rust/issues/61560">#61560</a> </p>
<p>Is weird, my kneejerk reaction is that this more of a rustdoc issue, than a rustc one. Need somebody to bisect where regression happened, I can do that.</p>



<a name="171164084"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171164084" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171164084">(Jul 18 2019 at 12:23)</a>:</h4>
<p><strong>Compiler panic with generic-typed nested closures</strong> <a href="https://github.com/rust-lang/rust/issues/59494" target="_blank" title="https://github.com/rust-lang/rust/issues/59494">#59494</a> </p>
<p>Unlikely to be looked at before the vacation spree is over.</p>



<a name="171164340"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171164340" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171164340">(Jul 18 2019 at 12:27)</a>:</h4>
<p>Unclear to me why <strong>Permit <code>-&gt; _</code> return types for improved diagnostics</strong> <a href="https://github.com/rust-lang/rust/issues/56132" target="_blank" title="https://github.com/rust-lang/rust/issues/56132">#56132</a> got marked as P-high.</p>



<a name="171164896"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171164896" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171164896">(Jul 18 2019 at 12:33)</a>:</h4>
<p>We have the following beta-nominated issues to look at:</p>
<ul>
<li><strong>Fix <a href="https://github.com/rust-lang/rust/issues/62660" target="_blank" title="https://github.com/rust-lang/rust/issues/62660"><a href="https://github.com/rust-lang/rust/issues/62660" target="_blank" title="https://github.com/rust-lang/rust/issues/62660">#62660</a></a></strong> <a href="https://github.com/rust-lang/rust/issues/62668" target="_blank" title="https://github.com/rust-lang/rust/issues/62668">#62668</a> </li>
<li><strong>Cancel unemitted diagnostics during error recovery</strong> <a href="https://github.com/rust-lang/rust/issues/62666" target="_blank" title="https://github.com/rust-lang/rust/issues/62666">#62666</a></li>
<li><strong>Correctly break out of recovery loop</strong> <a href="https://github.com/rust-lang/rust/issues/62607" target="_blank" title="https://github.com/rust-lang/rust/issues/62607">#62607</a> </li>
<li><strong>Handle errors during error recovery gracefully</strong> <a href="https://github.com/rust-lang/rust/issues/62604" target="_blank" title="https://github.com/rust-lang/rust/issues/62604">#62604</a></li>
<li><strong>rustc_target: avoid negative register counts in the SysV x86_64 ABI.</strong> <a href="https://github.com/rust-lang/rust/issues/62380" target="_blank" title="https://github.com/rust-lang/rust/issues/62380">#62380</a> </li>
<li><strong>Only error about MSVC + PGO + unwind if we're generating code</strong> <a href="https://github.com/rust-lang/rust/issues/62615" target="_blank" title="https://github.com/rust-lang/rust/issues/62615">#62615</a> </li>
<li><strong>Emit warning when trying to use PGO in conjunction with unwinding on Windows</strong> <a href="https://github.com/rust-lang/rust/issues/61853" target="_blank" title="https://github.com/rust-lang/rust/issues/61853">#61853</a> </li>
</ul>
<p>Note that the two last issues are very closely related.</p>
<p>Furthermore these two isses are also nominated for backport to stable:</p>
<ul>
<li><strong>Fix <a href="https://github.com/rust-lang/rust/issues/62660" target="_blank" title="https://github.com/rust-lang/rust/issues/62660"><a href="https://github.com/rust-lang/rust/issues/62660" target="_blank" title="https://github.com/rust-lang/rust/issues/62660">#62660</a></a></strong> <a href="https://github.com/rust-lang/rust/issues/62668" target="_blank" title="https://github.com/rust-lang/rust/issues/62668">#62668</a> </li>
<li><strong>Correctly break out of recovery loop</strong> <a href="https://github.com/rust-lang/rust/issues/62607" target="_blank" title="https://github.com/rust-lang/rust/issues/62607">#62607</a></li>
</ul>



<a name="171165006"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171165006" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171165006">(Jul 18 2019 at 12:35)</a>:</h4>
<p>It is likely that in the actual meeting I’ll dedicate most of the time for dealing with these nominations and we’ll do the rest if we end up having time.</p>



<a name="171165101"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171165101" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171165101">(Jul 18 2019 at 12:36)</a>:</h4>
<p>Mostly because it is the easy book-keeping that needs to be done sometime before the next train rollover that occurs in  a month.</p>



<a name="171165418"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171165418" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171165418">(Jul 18 2019 at 12:40)</a>:</h4>
<p><strong>Add a "diagnostic item" scheme for lints referring to libstd items</strong> <a href="https://github.com/rust-lang/rust/issues/60966" target="_blank" title="https://github.com/rust-lang/rust/issues/60966">#60966</a> </p>
<p>Appears to be waiting for <span class="user-mention" data-user-id="124288">@oli</span> to finalize their design. Removing I-nominated.</p>



<a name="171165445"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171165445" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171165445">(Jul 18 2019 at 12:41)</a>:</h4>
<p>Would be good if <span class="user-mention" data-user-id="124288">@oli</span> did comment on the actual status of the PR.</p>



<a name="171165554"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171165554" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171165554">(Jul 18 2019 at 12:42)</a>:</h4>
<p><strong>Turn HIR indexing into a query</strong> <a href="https://github.com/rust-lang/rust/issues/59064" target="_blank" title="https://github.com/rust-lang/rust/issues/59064">#59064</a> </p>
<p>Has been visited before without notable changes since.</p>



<a name="171165782"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171165782" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171165782">(Jul 18 2019 at 12:45)</a>:</h4>
<p><strong>1.30 -&gt; 1.31 dylib late-binding regression with GNU binutils 2.28 or older.</strong> <a href="https://github.com/rust-lang/rust/issues/61539" target="_blank" title="https://github.com/rust-lang/rust/issues/61539">#61539</a></p>
<p>Removing nomination, as we discussed it briefly last week, albeit without conclusion.</p>



<a name="171166253"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171166253" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171166253">(Jul 18 2019 at 12:51)</a>:</h4>
<p><strong>Encountered error <code>Unimplemented</code> selecting &lt;...&gt; during codegen</strong> <a href="https://github.com/rust-lang/rust/issues/58375" target="_blank" title="https://github.com/rust-lang/rust/issues/58375">#58375</a> </p>
<p>Has a PR put up and approved for landing.</p>



<a name="171166639"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171166639" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171166639">(Jul 18 2019 at 12:55)</a>:</h4>
<p><strong>ICE: Rust spins when referencing associated types in <code>where</code> clause</strong> <a href="https://github.com/rust-lang/rust/issues/62430" target="_blank" title="https://github.com/rust-lang/rust/issues/62430">#62430</a> </p>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> managed to narrow this down to non-linear runtime, scheduling for a discussion at the actual meeting.</p>



<a name="171166932"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171166932" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171166932">(Jul 18 2019 at 12:58)</a>:</h4>
<p>Actually, since the cycle caching code is very related… referencing that issue in <a href="https://github.com/rust-lang/rust/issues/62430" target="_blank" title="https://github.com/rust-lang/rust/issues/62430">#62430</a> and un-nominating, as its status is essentially the same as for the other issues tracked by this meta-bug.</p>



<a name="171167054"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171167054" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171167054">(Jul 18 2019 at 12:59)</a>:</h4>
<p>Assigned to self to get an accurate bisection, though.</p>



<a name="171167956"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/pre-meeting%20triage%202019-07-18%20%2354818/near/171167956" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-18.20.2354818.html#171167956">(Jul 18 2019 at 13:08)</a>:</h4>
<p><strong>ICE "no ImplicitCtxt stored in tls" in Servo on Windows and macOS</strong> <a href="https://github.com/rust-lang/rust/issues/62717" target="_blank" title="https://github.com/rust-lang/rust/issues/62717">#62717</a> </p>
<p>Appears to have a solution already, so removed the nomination.</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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